A kind of degreasing agent used for oil field poly-containing sewage treatment and preparation method thereof

A technology of sewage treatment and degreasing agent, which is applied in the direction of water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problem that the degreasing rate of poly-containing sewage cannot reach the expected effect and is not applicable Solve the problems of degreasing treatment of poly-containing sewage, complex and changeable operation methods, etc., to achieve the effects of easy acquisition, transportation and storage, high degreasing efficiency and strong adaptability

Active Publication Date: 2021-06-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complex and changeable methods of ground implementation, the composition of sewage has obvious regional and timeliness
[0006] Patent ZL201410455664.7 "A degreaser for wastewater produced by binary compound flooding in oilfields" uses acryloyloxyethyl dimethylamine, chloroalkane, acrylamide, N,N'-methylenebis It is formed by the reaction of acrylamide, ammonium persulfate and sodium sulfite. This degreasing agent has the characteristics of less dosage, low cost and high oil removal rate. However, this degreasing agent is a reverse demulsifier. The milk effect is poor, and at the same time, the degreasing agent is not suitable for degreasing treatment of sewage containing poly
[0007] The degreasing agent provided by the patent ZL201611025438.0 "Ternary polymer used in the degreasing agent of heavy oil thermal recovery sewage treatment" belongs to the polymer surfactant, and the degreasing agent has the characteristics of low cost and high oil removal rate , which is mainly used in the degreasing process of oilfield heavy oil thermal recovery sewage, but according to the indoor evaluation, the degreasing rate of the degreasing agent for the sewage containing the polymer is not up to the expected effect, indicating that the degreasing agent is not suitable for the sewage containing the polymer degreasing treatment

Method used

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  • A kind of degreasing agent used for oil field poly-containing sewage treatment and preparation method thereof
  • A kind of degreasing agent used for oil field poly-containing sewage treatment and preparation method thereof
  • A kind of degreasing agent used for oil field poly-containing sewage treatment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: Oil Waste Waffi Water Treatment for Oilfield 1 Preparation method

[0027] (1) 1 mol acrylamide is added to three flasks equipped with a reflow condensate, a stirrer, and a thermometer, then 1421.6 g of distilled water and pH regulator NaOH solution, pH adjusting to 7, warmed to 30 ° C, at a stirring rate of 200 rpm The mixture was stirred for 10 min, then 0.071 g of formaldehyde syndrhythulfite, 0.107 g of EDTA and 0.355 g of azoiisopropylimidazoline were added, and the stirring rate was adjusted to 400 rpm, the stirring time was 10 min, and after completion, it was completely dissolved to obtain a mixture Solution.

[0028] (2) 0.1 mol 1- (3-sulfonate) -2-vinylpyridinonium salt salt and 0.01 mol acrylate were added to 0.01 mol acrylate, respectively, and 0.569 g was added after 40 minutes of nitrogen gas. Ammonium persulfate, continued to pass into nitrogen, then warmed to 75 ° C, and the constant temperature was 30 min, and the reaction was completely cooled t...

Embodiment 2

[0033] Example 2: Oil Waste Waffi Willed Water Treatment for Oilfield 2 Preparation method

[0034] (1) 1 mol acrylamide is added to three flasks equipped with a reflow condensate, a stirrer, and the thermometer is added, then 2012.5 g of distilled water and pH adjusting agent NaOH solution, pH adjustment to 8, warmed to 38 ° C, at a stirring rate of 220 rpm The mixture was stirred for 17 min, then 0.103 g of formaldehyde syndrhythulfite, 0.213 g of EDTA and 0.627 g of azoiisopropylimidazoline were added, and the stirring rate was adjusted to 480 rpm, the stirring time was 16 min, and after the dissolution, it was mixed Solution.

[0035] (2) 0.36 mol 1- (3-sulfonate) -2-vinylpyridinium inlenium salt salt and 0.4 mol acrylate were added in the mixed solution, respectively, and 1.125 g was added after 30 min of nitrogen. Ammonium sulfate, continued to pass into nitrogen, then warmed to 82 ° C, the constant temperature reaction was 50 min, and the reaction was completely cooled to r...

Embodiment 3

[0040] Example 3: Oil Willer W for Field Confucius Treatment 3 Preparation method

[0041] (1) 1 mol acrylamide is added to three flasks equipped with a reflow condensate, a stirrer, and then 2487.8 g of distilled water and a pH condition NaOH solution, pH adjusting to 9, warmed to 50 ° C, at a stirring rate of 300 rpm The mixture was stirred for 20 min, then 0.142 g of formaldehyde syndrhythulfite, 0.165 g of EDTA, and 0.853 g of azoiisopropylimidazoline, the stirring rate was adjusted to 600 rpm, the stirring time was 20 min, and after completion of complete dissolution, it was mixed Solution.

[0042] (2) 1.5 mol 1- (3-sulfonate) -2-vinylpyridinium inlenium in the above mixing solution is added to 0.9 mol acrylate dimethylaminethyl escetate, and 1.777 g is added after 50 min. Ammonium sulfate and continued to pass nitrogen, then warmed to 90 ° C, 40 min at a constant temperature, and then cooled to room temperature after completion to obtain a polymer solution.

[0043] (3) The...

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Abstract

The invention belongs to the technical field of sewage treatment, and in particular relates to a degreasing agent used for the treatment of poly-containing sewage in oil fields and a preparation method thereof. The degreasing agent is a zwitterionic type degreasing agent, and its molecular formula is as follows: wherein n=500-5000, m=1000-34000, p=800-42000. The degreasing agent of the present invention has the characteristics of high degreasing efficiency, and the degreasing rate of the polymer-containing sewage reaches more than 99.0%, which is more than 60% higher than that of the existing agent. Therefore, it can be widely used in oil field degreasing treatment of the polymer-containing sewage In process.

Description

Technical field [0001] The present invention relates to an oil-proof agent for oil field sewage treatment, and is specifically involved in an oil-containing agent and a preparation method thereof. Background technique [0002] Polymer oil supply technology has now achieved better oil feed effects. The polymer oil contained polyacrylamide (PAM), since the PAM has similarity to the emulsifier molecule such that the molecules in the presence of the system are concentrated on the oil-water interface, together with the emulsion molecule to form a large strength and good elastic composite film. Based on the above characteristics, the oil-based indicators of the polymer drive oil output sewage have higher oil. [0003] As the scale of the polymer oil supply is expanded, the problem with the coexistence of the wastewater. The polymer-driven water contains not only high oil content but also a large amount of polymer. The presence of the polymer increases the viscosity of the aqueous phase...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/40C02F1/56C02F1/28C08F220/56C08F226/06C08F220/34B01F17/22B01F17/32C02F103/10C09K23/22C09K23/32
CPCC02F1/40C02F1/56C02F1/285C08F220/56C02F2103/10C09K23/00
Inventor 钱钦肖建洪张星孙玉海李侠清钟安海冯震宋志东代兴益
Owner CHINA PETROLEUM & CHEM CORP
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